¹ School of Management & Economics Shandong Normal University, Jinan, China
² School of Science University of Jinan, Jinan, China
³ Department of Management Jinan Railway Polytechnic, Jinan, China

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Abstract—Textual-based password authentication scheme tends to be more vulnerable to attacks such as shouldersurfing and hidden camera. To overcome the vulnerabilities of traditional methods, visual or graphical password schemes have been developed as possible alternative solutions to text-based password schemes. Because simply adopting graphical password authentication also has some drawbacks, schemes using graphic and text have been developed. In this paper, we propose a hybrid password authentication scheme based on shape and text. It uses shapes of strokes on the grid as the origin passwords and allows users to login with text passwords via traditional input devices. The method provides strong resistant to hidden-camera and shoulder-surfing. Moreover, the scheme has high scalability and flexibility to enhance the authentication process security. The analysis of the security level of this approach is also discussed.

Index Terms—first term, second term, third term, fourth term, fifth term, sixth term

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Cite: Ziran Zheng, Xiyu Liu, Lizi Yin, and Zhaocheng Liu, " A Hybrid Password Authentication Scheme Based on Shape and Text," Journal of Computers vol. 5, no. 5, pp. 765-772, 2010.